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Effect of different repair techniques and aging on shear bond strength of repaired resin nano ceramic / Mohamed Ahmed Mohamed Elmorsy ; Supervised Lamia Sayed Kheiralla , Maha Ahmed Taymour

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Mohamed Ahmed Mohamed Elmorsy , 2015Description: 84 P. : charts , facsimiles ; 25cmOther title:
  • تأثير مختلف تقنيات الإصلاح و التعميرعلى قوة الربط القصية بين مادة الإصلاح و الراتنج نانو سيراميك [Added title page title]
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Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics Summary: The aim of the study is to evaluate the effect of different repair techniques and aging on the bond strength of the composite resin repair to composite nano ceramic material. A total of 30 samples were constructed from lava ultimate blocks (resin nano ceramic) for this study with standardized dimensions (7 X 7 X 2 mm3). Samples were divided according to surface treatment into 3 groups: Group I: Surface treatment using silica blasting (Cojet) technique. Group II: Surface treatment using sandblasting technique (50 æm alumina). Group III: No treatment (control) . Then surface roughness was measured by profilometer and a random selected sample from each group was scanned by electron microscope. Then repair layer was applied in accordance with the manufacturers{u2019} recommendations. All samples were stored in distilled water at 370c for 24 hours. Each group was further sub divided into 2 subgroups according to aging. Subgroup 1: Not subjected to aging. Subgroup 2: Subjected to aging. Then subgroups were aged by being subjected to thermo cycling for 500 cycles between 5 and 550C with interval time of 30 second. Each sample was subjected to a shear force at a crosshead speed of 0.5 mm / min using a universal testing machine until failure
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.09.M.Sc.2015.Mo.E (Browse shelf(Opens below)) Not for loan 01010110067647000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.09.M.Sc.2015.Mo.E (Browse shelf(Opens below)) 67647.CD Not for loan 01020110067647000

Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics

The aim of the study is to evaluate the effect of different repair techniques and aging on the bond strength of the composite resin repair to composite nano ceramic material. A total of 30 samples were constructed from lava ultimate blocks (resin nano ceramic) for this study with standardized dimensions (7 X 7 X 2 mm3). Samples were divided according to surface treatment into 3 groups: Group I: Surface treatment using silica blasting (Cojet) technique. Group II: Surface treatment using sandblasting technique (50 æm alumina). Group III: No treatment (control) . Then surface roughness was measured by profilometer and a random selected sample from each group was scanned by electron microscope. Then repair layer was applied in accordance with the manufacturers{u2019} recommendations. All samples were stored in distilled water at 370c for 24 hours. Each group was further sub divided into 2 subgroups according to aging. Subgroup 1: Not subjected to aging. Subgroup 2: Subjected to aging. Then subgroups were aged by being subjected to thermo cycling for 500 cycles between 5 and 550C with interval time of 30 second. Each sample was subjected to a shear force at a crosshead speed of 0.5 mm / min using a universal testing machine until failure

Issued also as CD

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